mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-05 13:29:57 -05:00
adb16f9ff4
Commit 65ef80b fixed building with xcb-util >= 0.3.8, but the reply is never checked (possible SIGSEGV if the reply is NULL) nor freed (memory leak at each call of the functions). Also, remove include and dependencies on xcb-atom, as it was only meaningful for xcb_atom_get() and STRING, and depend instead on xcb >= 1.6 for XCB_ATOM_STRING.
148 lines
4 KiB
C
148 lines
4 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <string.h>
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#include "x11prop.h"
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#include <pulsecore/macro.h>
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#include <xcb/xproto.h>
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#define PA_XCB_FORMAT 8
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static xcb_screen_t *screen_of_display(xcb_connection_t *xcb, int screen) {
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const xcb_setup_t *s;
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xcb_screen_iterator_t iter;
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if ((s = xcb_get_setup(xcb))) {
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iter = xcb_setup_roots_iterator(s);
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for (; iter.rem; --screen, xcb_screen_next(&iter))
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if (0 == screen)
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return iter.data;
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}
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return NULL;
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}
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void pa_x11_set_prop(xcb_connection_t *xcb, int screen, const char *name, const char *data) {
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xcb_screen_t *xs;
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xcb_intern_atom_reply_t *reply;
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pa_assert(xcb);
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pa_assert(name);
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pa_assert(data);
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if ((xs = screen_of_display(xcb, screen))) {
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reply = xcb_intern_atom_reply(xcb,
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xcb_intern_atom(xcb, 0, strlen(name), name),
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NULL);
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if (reply) {
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xcb_change_property(xcb, XCB_PROP_MODE_REPLACE, xs->root, reply->atom,
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XCB_ATOM_STRING, PA_XCB_FORMAT,
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(int) strlen(data), (const void*) data);
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free(reply);
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}
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}
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}
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void pa_x11_del_prop(xcb_connection_t *xcb, int screen, const char *name) {
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xcb_screen_t *xs;
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xcb_intern_atom_reply_t *reply;
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pa_assert(xcb);
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pa_assert(name);
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if ((xs = screen_of_display(xcb, screen))) {
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reply = xcb_intern_atom_reply(xcb,
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xcb_intern_atom(xcb, 0, strlen(name), name),
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NULL);
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if (reply) {
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xcb_delete_property(xcb, xs->root, reply->atom);
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free(reply);
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}
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}
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}
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char* pa_x11_get_prop(xcb_connection_t *xcb, int screen, const char *name, char *p, size_t l) {
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char *ret = NULL;
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int len;
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xcb_get_property_cookie_t req;
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xcb_get_property_reply_t* prop = NULL;
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xcb_screen_t *xs;
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xcb_intern_atom_reply_t *reply;
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pa_assert(xcb);
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pa_assert(name);
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pa_assert(p);
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xs = screen_of_display(xcb, screen);
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/*
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* Also try and get the settings from the first screen.
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* This allows for e.g. a Media Center to run on screen 1 (e.g. HDMI) and have
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* different defaults (e.g. prefer the HDMI sink) than the primary screen 0
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* which uses the Internal Audio sink.
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*/
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if (!xs && 0 != screen)
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xs = screen_of_display(xcb, 0);
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if (xs) {
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reply = xcb_intern_atom_reply(xcb,
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xcb_intern_atom(xcb, 0, strlen(name), name),
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NULL);
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if (!reply)
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goto finish;
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req = xcb_get_property(xcb, 0, xs->root, reply->atom, XCB_ATOM_STRING, 0, (uint32_t)(l-1));
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free(reply);
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prop = xcb_get_property_reply(xcb, req, NULL);
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if (!prop)
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goto finish;
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if (PA_XCB_FORMAT != prop->format)
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goto finish;
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len = xcb_get_property_value_length(prop);
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if (len < 1 || len >= (int)l)
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goto finish;
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memcpy(p, xcb_get_property_value(prop), len);
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p[len] = 0;
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ret = p;
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}
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finish:
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if (prop)
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free(prop);
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return ret;
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}
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